diff --git a/.github/workflows/dependencies/dependencies_mac.sh b/.github/workflows/dependencies/dependencies_mac.sh
index dc1aec64..ef4c617d 100755
--- a/.github/workflows/dependencies/dependencies_mac.sh
+++ b/.github/workflows/dependencies/dependencies_mac.sh
@@ -8,11 +8,8 @@
 set -eu -o pipefail
 
 brew update
-brew install gfortran || true
+brew install gcc@15 || true
 brew install libomp || true
-brew install open-mpi || true
+brew install --cc=gcc-15 open-mpi --build-from-source || true
 brew install ccache || true
 
-# verify installation
-gfortran-14 --version
-otool -L $(which gfortran-14)
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index c1a9839f..534c64bd 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -8,7 +8,7 @@ env:
 jobs:
   # Build all tutorials
   tests-macos:
-    name: AppleClang@15.0 GFortran@14.1 [tutorials]
+    name: AppleClang@15.0 GFortran@15.1 [tutorials]
     runs-on: macos-latest
     steps:
     - uses: actions/checkout@v4
@@ -28,7 +28,7 @@ jobs:
             -DAMReX_FORTRAN_INTERFACES=ON \
             -DAMReX_EB=ON                 \
             -DAMReX_PARTICLES=ON        \
-            -DCMAKE_Fortran_COMPILER=$(which gfortran-14)   \
+            -DCMAKE_Fortran_COMPILER=$(which gfortran-15)   \
             -DCMAKE_CXX_COMPILER_LAUNCHER=$(which ccache)
         cmake --build build --parallel 2
 
@@ -40,7 +40,7 @@ jobs:
             -DAMReX_FORTRAN_INTERFACES=ON \
             -DAMReX_EB=ON                 \
             -DAMReX_PARTICLES=ON        \
-            -DCMAKE_Fortran_COMPILER=$(which gfortran-14)   \
+            -DCMAKE_Fortran_COMPILER=$(which gfortran-15)   \
             -DCMAKE_CXX_COMPILER_LAUNCHER=$(which ccache)
         cmake --build build --parallel 2